General description This portable hand crank chainsaw chain sharpener is designed specifically for sharpening electric chainsaws. It provides a quick and easy solution to sharpen your saw chain, achieving a sharp edge in just 3-5 seconds. The sharpener operates without a power source, making it convenient for outdoor use. Technical specifications Material: Aluminum alloy and stainless steel Dimensions: 8.5 cm x 2.6 cm x 5.7 cm Compatible with chainsaw sizes: 14"/16"/18"/20" and chain types: 1/4"/3/8" Includes: 3 replacement grinding heads Compatibility and accessories Compatible with most electric chainsaw designs Features 2 fixed sharpening holes for different hole strings Comes with 3 replacement grinding heads Installation Fix the position of the sharpener according to your needs Rotate the handle to sharpen the saw chain Usage Pull the chain to align it for sharpening Use the ratchet as a stop for precise and repeatable positioning Other information